Self-closing valve.



C. C. TOZIER.

SELF CLOSING VALVE.

APPLICATION FILED SEPT. 23, I916.

Patehted Jul 17, 1917.

It ll F i-a CHARLES C. TOZIER, OF COCI-IITUATE, MASSACHUSETTS.

SELF-CLOSING VALVE.

Specification of Letters Patent.

Patented July 17, 1917..

Application filed September 23, 1916. Serial No. 121,880.

I '0 all whom it may concern.

Be it known that 1, CHARLES C. TOZIER, a citizen of the United States residing at Cochituate, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Self.- Closing Valves, of which the followingis a specification. I

This invention relates to certain new and useful improvements in self-closing valves designed more especially as a feed valve for low pressure heating or steam boilers.

It has for its objects among others to provide a simple, yet efiicient and reliable valve so constructed that the intake of the water through the valve and around the same prevents the cutting of the seat and when closed it cannot be opened by back pressure as the valve stem is arranged on perfect centers and there is no wear to the back connection, all friction coming on the forward bearing. I provide a weighted handle so as to insure closing of the valve at all times except when manually manipulated and I further provide a sediment cock in the valve casing whereby all dirt, grit etc., may be readily removed. The construction is such that the operator must actuate the handle to fill the boiler and when he lets go the same it will automatically return the valve to closed position, thus preventing the flooding of the boiler.

Other objects and advantages of the .invention will hereinafter appear and the novel features thereof will be pointed out in the appended claims.

he invention is clearly illustrated in the accompanying drawings, which, with the numerals of reference marked thereon, form a part of this specification, and in which- *igure 1 is a substantially central vertical section through the valve with parts broken away.

Fig. 2 is a section at right angles to Fig. 1, as on the line 2-2 of Fig. 1, looking in the direction of the arrows.

Fig. 3 is a cross section on the line 33 of Fig. 1, looking in the direction of the ar rows.

Fig. 4 is a bottom plan of the valve, as looking in the direction of the arrows 44.

Like numerals of reference indicate like parts throughout the different views.

Referring. to the drawings,

1 designates the valve casing having the particularly usual inlet screw-threaded nipple 2 and the usual screw-threaded outlet nipple 3. It is formed with a diaphragm 4 with anannular depending neck 5 forming, a skirt and chamber in which the valve is disposed.

he casing is a removable plug 6 to permit of the insertion of the valve, and with a sediment cock 7 whereby the grit and sediment may be removed When desired. At its upper side it is provided with a bonnet 8 recelving packing 9 and in which is adjustably and removably engaged the threaded cap or member 10 having a passage 11 therethrough for the reciprocation of the valve stem 12. This valve stem near its lower end is corrugated, as seen at 13, for the passage of the water and at its lower end carries the valve 14 which is mounted to re ciprocate loosely within the chamber formed by the depending flange 5 of the diaphragm 4 and this valve is provided with a plurality, in the present instance four, holes 15 extending therethrough, as seen clearly in Figs. 1, 2 and 4.

The upper end of the valve stem 12 has pivotally connected therewith, as at 16, the link or crank 17, the other end of which is eccentrically connected, as at 18, with the disk portion 19 of a handle 20, which latter is carried by the yoke 21 and is preferably made hollow and adapted lead or other substance 22, as seen clearly in Fig. 1. By this means the weight of the handle may be varied as circumstances may require. The yoke 21 is pivotally mounted on the pivot 23 adjustably supported in the uprights 24 rising from the casing 1, as seen clearly in Figs. 1 and 2.

On the uprights 24 are lugs or shoulders 25 against which the yoke is designed to engage to limit the movement of the handle.

With the partsconstructed and arranged substantially as described, the operation will be readily understood and a detailed description thereof is not necessary. When the handle is down, the crank or link 17 is in direct alinement with the valve stem so that when water is cut off from the supply the back pressure from the boiler cannot open the valve. In order to open the valve to fill the boiler, the operator must move the handle into the position shown in full lines in Fig. 1 and when he lets go of the handle its Weight will cause it always to drop into to be filled with,

provided at the bottom with q depending skirt,

the dotted line position, thus acting as a self-closing valve and preventing the flooding of the boiler. I

By reason of the holes in the disk valve and the space around the disk, the force of the Water pressure cannot wear the seat.

Modifications in details may be resorted to without departing from the spirit of the invention or sacrificing any of its advantages.

That is claimed as new is 1. A casing having a diaphragm and a a valve stem movable through the diaphragm, a disk valve carried by the stem and movable within the skirt, means for controlling the valve comprising a weighted handle and an eccentric thereon,

and a link connection between the same and the valve stem.

2. A casing having a diaphragm and a depending skirt, a valve stem movable through the diaphragm, adisk valve carried by the stem and movable within the skirt,

five cents each, Washington, D. G.

the same and the valve stem, said connection being in vertical alinement with the valve stem when the valve is closed.

In testimony whereof I ailix my signature in the presence of two witnesses.

7, CHARLES C. TOZIER.

Witnesses:

MoR'roN V. B. BARTLETT, WILLIAM O. CUTLER.

by addressing the Commissioner of Patents, 

